<template>
  <div>
      <!-- function copy(target){
   填空的内容:
 return target.slice(0,5)
}
let arr = [1, 2, 3, 4, 5]

// console.log(arr.slice(0,3));
let brr = copy(arr); 
arr.push(100);
console.log(brr); // [1, 2, 3, 4, 5] -->
  </div>
</template>

<script>
export default {

}
</script>

<style>

</style>